Place the chicken breasts in a plastic bag, and add the olive oil and lemon juice. Let marinate for 30 minutes. Meanwhile, slice the tomatoes and avocado.

Place the chicken on a preheated grill pan and season with salt and pepper.

Cook for 2 minutes and rotate the chicken 45 degrees to create grill marks. Let cook another 1 to 2 minutes, then flip. Cook again for 2 minutes, then rotate 45 degrees to finish cooking. The internal temperature should be at least 165°F.

Assemble the salads: Place the spring mix in the bottom of a bowl and top with a chicken breast. Garnish with sliced avocados and tomatoes. Serve with your family’s favorite salad dressing.